220-1201 Practice Test 35 — 15 Questions

Question 1

A customer complains that their VoIP phone intermittently drops calls and has poor audio quality. The phone is connected to a switch port that also carries data traffic for a nearby workstation. What is the most likely cause?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Quality of Service (QoS) is not configured on the switch port.. VoIP is sensitive to latency and packet loss. When a switch port carries both voice and data without proper QoS, data traffic can congest the link, causing dropped packets and poor audio. QoS prioritizes voice traffic to prevent this.

Answer

The switch port is set to half-duplex.

Answer

The network cable is too long.

Answer

The phone’s firmware is outdated.

Question 2

A user wants to print a high-resolution photo on glossy paper using an inkjet printer. After printing, the colors appear washed out and the photo has a grainy appearance. The printer is set to 'normal' quality and 'plain paper' in the driver. What should the technician change to improve the output?

Accepted Answer

Change the paper type to 'glossy photo paper' and the print quality to 'best' or 'photo'.. For high-quality photo prints on glossy paper, the driver must be set to 'photo' or 'best' quality and the paper type to 'glossy' or 'photo paper'. This optimizes ink droplet size and drying time. The default 'normal' and 'plain paper' settings use less ink and different halftoning, causing washed-out, grainy results.

Answer

Replace the ink cartridges with high-yield cartridges.

Answer

Calibrate the printer using the built-in utility.

Answer

Use a different brand of glossy paper.

Question 3

A user complains that their new laptop only sees 2.4 GHz Wi-Fi networks, not the 5 GHz network that was previously visible on their old phone. The router is dual-band and configured to broadcast both bands. What is the most likely reason the laptop cannot see the 5 GHz network?

Accepted Answer

The laptop’s wireless adapter does not support 5 GHz frequencies. The most likely reason is that the laptop's wireless adapter only supports 2.4 GHz frequencies. Since the old phone could see the 5 GHz network, the router's 5 GHz radio is functioning correctly, but the laptop's hardware lacks the capability to detect or connect to 5 GHz bands, which is a common limitation in budget or older laptops.

Answer

The router’s 5 GHz radio is set to a channel not supported by the laptop

Answer

The 5 GHz SSID is hidden

Answer

Interference from microwave ovens is blocking the 5 GHz signal

Question 4

A user reports that they can access internal resources using IP addresses but cannot access them using hostnames. Other users on the same network have no issues. What is the most likely cause?

Accepted Answer

The user's DNS settings are incorrect. The ability to use IP addresses but not hostnames points to a DNS resolution problem on the user's device. This could be due to a misconfigured DNS server address in the network settings or a local hosts file issue. Other users working normally suggests the problem is client-specific.

Answer

The DHCP server is out of addresses

Answer

The DNS server is down

Answer

The router's NAT is misconfigured

Question 5

A network administrator needs to allow secure remote administration of a router using SSH. The router is configured to use the default SSH port. Which port must be opened on the firewall?

Accepted Answer

22. SSH (Secure Shell) operates on TCP port 22 by default. To allow secure remote administration of the router, the firewall must permit inbound TCP traffic on port 22. This enables encrypted management sessions, unlike Telnet which uses unencrypted port 23.

Answer

23

Answer

161

Answer

443

Question 6

A technician is troubleshooting a network where a user cannot access the internet. The user's workstation has an IP of 192.168.1.15, subnet mask 255.255.255.0, and default gateway 192.168.1.1. The technician pings 192.168.1.1 successfully but cannot ping 8.8.8.8. What is the most likely cause?

Accepted Answer

The router's WAN connection is down or misconfigured.. Successful pings to the default gateway (192.168.1.1) confirm that Layer 2 and Layer 3 connectivity within the local subnet is working, and that the workstation's IP, subnet mask, and default gateway are correctly configured. Failure to ping 8.8.8.8 (a public IP) indicates that traffic is not being routed beyond the local network, which points to an issue with the router's WAN connection or its routing configuration to the internet.

Answer

The workstation's subnet mask is incorrect.

Answer

The DNS server is not configured on the workstation.

Answer

The workstation's IP address is a duplicate.

Question 7

A user's laptop has a USB-C port that supports Thunderbolt 3. They want to connect two 4K monitors daisy-chained. The monitors have DisplayPort inputs. Which cable configuration is required?

Accepted Answer

Use a USB-C to DisplayPort cable from the laptop to the first monitor, then a DisplayPort cable from the first monitor to the second.. Thunderbolt 3 over USB-C supports DisplayPort daisy-chaining (Multi-Stream Transport, MST). A USB-C to DisplayPort cable from the laptop to the first monitor carries the video signal, and a standard DisplayPort cable from the first monitor's DisplayPort out to the second monitor's DisplayPort in completes the chain. This configuration leverages the MST capability inherent in Thunderbolt 3 and DisplayPort 1.2 or later, allowing two 4K monitors to be driven from a single port.

Answer

Connect both monitors directly to the laptop using two separate USB-C to HDMI cables.

Answer

Use a USB-C hub with two HDMI ports.

Answer

Use a single USB-C to DisplayPort cable that splits into two DisplayPort connectors.

Question 8

A hospital needs to connect multiple buildings across a large campus to share patient records and imaging data. The network must be private, high-speed, and cover the entire campus. Which network type should be implemented?

Accepted Answer

Metropolitan Area Network (MAN). A Metropolitan Area Network (MAN) is the correct choice because it is designed to interconnect multiple locations across a city or large campus, providing private, high-speed connectivity. In this scenario, the hospital requires a network that spans beyond a single building but is confined to a campus-sized area, which fits the MAN scope. Technologies like Metro Ethernet or MPLS can deliver the necessary bandwidth for sharing patient records and imaging data securely.

Answer

Local Area Network (LAN)

Answer

Wide Area Network (WAN)

Answer

Personal Area Network (PAN)

Question 9

A customer wants to connect two switches in different buildings about 150 meters apart. The link must support at least 1 Gbps. Which cabling solution is most appropriate?

Accepted Answer

Single-mode fiber optic cable.. Single-mode fiber optic cable is the most appropriate solution because it supports 1 Gbps over distances far exceeding 150 meters, with typical reach up to 10 km or more. Unlike copper cabling, single-mode fiber is immune to electromagnetic interference (EMI) and signal degradation over longer runs, making it ideal for inter-building connections where electrical isolation and distance are critical factors.

Answer

Cat6a copper cable.

Answer

Cat5e copper cable with a repeater.

Answer

Coaxial cable with a balun.

Question 10

A user complains that their laptop frequently disconnects from the Wi-Fi when they move from their desk to a conference room 30 meters away. The office uses a single wireless access point (AP). Which network type is being used, and what is the most likely cause of the disconnection?

Accepted Answer

Infrastructure mode WLAN; the AP's signal strength is insufficient at that distance.. The scenario describes an infrastructure mode WLAN, where devices connect through a single access point. The disconnection at 30 meters is most likely due to insufficient signal strength from that AP, as typical consumer-grade Wi-Fi (e.g., 2.4 GHz) has an effective indoor range of about 30–40 meters, and obstacles or interference can further reduce it.

Answer

Ad hoc network; the laptop is trying to connect directly to other devices.

Answer

Mesh network; the laptop is roaming between mesh nodes.

Answer

PAN network; the laptop is using Bluetooth, which has limited range.

Question 11

A technician is troubleshooting a laptop that connects to a Wi-Fi network but gets a 'No Internet, Secured' message. The laptop has a static IP address configured. What is the most likely issue?

Accepted Answer

The laptop's static IP address is not in the same subnet as the router.. A static IP address that is not in the same subnet as the router prevents the laptop from communicating with the default gateway. Even though the Wi-Fi association succeeds (hence 'Secured'), the laptop cannot route traffic to the internet because it cannot reach the router's IP address. This mismatch causes the 'No Internet' message while the link-layer connection remains intact.

Answer

The Wi-Fi network's SSID is hidden.

Answer

The laptop's Wi-Fi driver is corrupted.

Answer

The router's DHCP server is disabled.

Question 12

A user reports that their Windows tablet's battery drains quickly even when the device is idle. The technician checks the battery report and finds that the 'System' process is using a high percentage of CPU. What is the most likely cause?

Accepted Answer

A device driver is preventing the tablet from entering a low-power sleep state. High CPU usage by the 'System' process often indicates a driver or hardware issue, such as a failing battery or a misconfigured power plan. In tablets, a common cause is a driver that prevents the device from entering low-power sleep states, leading to constant CPU activity and battery drain.

Answer

The battery is nearing the end of its life and cannot hold a charge

Answer

A background app is consuming CPU resources

Answer

The tablet's power plan is set to 'High performance'

Question 13

A technician is configuring a dual-monitor setup for a stock trader. One monitor is a 24-inch 1080p display, and the other is a 27-inch 4K display. The user wants the mouse to move seamlessly between them. What setting must the technician configure in the OS display settings?

Accepted Answer

Arrange the displays in the OS to match their physical positions.. The OS display arrangement settings (e.g., in Windows Display Settings or macOS Displays) allow the technician to drag and position the virtual representations of the monitors to match their physical placement. This ensures that the cursor moves seamlessly across the bezel edge from one screen to the other, preventing it from getting 'stuck' at an invisible boundary. Without this alignment, the mouse may jump to an unexpected location or fail to cross between displays smoothly.

Answer

Set both monitors to the same resolution.

Answer

Adjust the scaling settings on the 4K monitor.

Answer

Set the 4K monitor as the primary display.

Question 14

A customer reports that their new Gigabit Ethernet connection is only achieving 100 Mbps speeds. The cable run is about 75 meters through a drop ceiling. The technician checks the patch panel and wall jack terminations, which appear correct. What is the most likely cause of the speed issue?

Accepted Answer

The cable is shielded (STP) and the connectors are unshielded (UTP).. The most likely cause is that the cable is shielded (STP) but the connectors are unshielded (UTP). When STP cable is used with UTP connectors, the shielding is not properly grounded, leading to signal interference and degradation. This often results in the link falling back to 100 Mbps. The 75-meter run is within the 100-meter limit for Gigabit, and terminations appear correct, so the shield mismatch is the primary suspect.

Answer

The cable run exceeds the maximum length for Gigabit Ethernet.

Answer

The cable is Cat5e or lower, which cannot support Gigabit Ethernet at that distance.

Answer

The wall jack is wired for T568B but the patch panel uses T568A.

Question 15

A company is expanding its office to a new building 5 kilometers away and needs to connect the two LANs so employees can share files and access the same servers as if they were in one location. They want a dedicated, high-speed connection without using the public internet. Which network type should be implemented?

Accepted Answer

Metropolitan Area Network (MAN). A Metropolitan Area Network (MAN) is designed to interconnect multiple LANs across a city or metropolitan region, typically up to 50 km, using dedicated fiber optic links such as Metro Ethernet or SONET/SDH. This provides the high-speed, private connection required without traversing the public internet, making it ideal for connecting two offices 5 km apart.

Answer

Local Area Network (LAN)

Answer

Wide Area Network (WAN)

Answer

Personal Area Network (PAN)